This is a term used by an individual to express how insanely jealous they are of another person's belongings or situation. The Jelly is an abbreviation for Jealous, the AF stands for As F**k.
Stuart: OH my gosh, I just won the $600 Million jackpot on the powerball lottery!!!
Brian: Wow, I'm Jelly AF!
Brian: Wow, I'm Jelly AF!
by The real C mama January 7, 2022